Trip hammer



H. ROEKER TRIP HAMMER Filed Dec. 5, 1921 Dec. 11 923.

Patented ll,

unrre stare:

l-IU'GG BOEKEE, GT? CLTNTQN, 'WISCONSZN.

TRIP I-IAMELEER.

Application filer]. llecember 5, 1921.

To all whom it tflftj/ concern:

Be it known that l, HUGO Romain, a citizen of the United States, residing at Clinton, in the county of Rock and State of Wisconsin, have invented certain new and use ful Improvements in Trip Hammers, of which the following is a specification.

The prime object of my invention is to provide means whereby the hammer of a trip hammer will remain at rest at or near its upward position when the machine is running. it is found in trip hammers now in use, no means is provided to retain the hammer in its upward position, hence when the machine is runnii vibration causes the hammer to settle do to its lowest position, which results in insufiicient clearance between the hammer and the die to properly arrange the work upon the die before operating the hammer. A second object of my invention is to stop and hold the hammer of a trip hammer at or near its upward position without introduction of auxiliary operating levers or the like. These objects are accomplished by use of the mechanism herein described and illustrated in the accompanying drawings in which Fig. 1 is a side elevation and Fig. 2 is a front elevation of a trip hammer equipped with my invention. Fig. 3 is top view, in section, showing details of clutch and operating fork. a

In specifically describing the construction shown in the drawings similar numerals indicate corresponding parts in the two views.

My invention consists in providing a brake which is applied to and released from the fly-wheel of a trip hammer by use of the foot trip lever with which the trip hammer is regularly equipped, the movement of the foot lever which actuates the hammer clutch to produce motion of the hammer releases the brake shoe on the fly wheel and the movement of foot lever to throw clutch out of engagement applies the brake shoe to the fly-wheel; from this it will be seen there are no extra levers to manipulate and no attention is given to the brake.

Referring to the drawings, 1 is a shaft carrying the clutch, 2, at one end and the fly-wheel, 3, at the opposite end; the clutch, 2, is operated by the bellcrank, i, which is pivoted upon the stud, 5, and connected to the foot lever, 7, by the connecting rod, 6; the flywheel, 3, has a crank pin, 8, by means feerial No. 520,977.

of which the hammer, 9, receives reciproating-motion; 18 is a pulley to which power is applied and 19 is the die of the trip hammer. All of the foregoing parts are furnished regularly with the trip hammer illustrated.

The parts included in my invention will now be taken up.

10 is a bar pivoted at one end to the stud 5, and at its opposite end is twisted a quarter turn and carries the brake shoe 11 which receives the brake lining, 12; the bar 10 is supported, near the brake shoe, by means of a spiral spring, 13, which is suspended from a stud bolt, 14; a bent clip, 15, secured to the main frame serves as a guide to the bar 10; depending from and secured to the bar 10 is the member, 16, threaded at it lower extremity to, adjustably, receive the con.- necting rod, 17, the rod 17 and the rod 6 attach to the foot lever 7, at a common point.

The operation of my invention is explained as follow :Motion is given to pulley 18 by means of a moving belt, this pulley is the only part of the machine in action, the brake lining 12 is held against the fly-wheel 3 by the spring 13 and the hammer 9 is at rest in any desired position with relation to the die 19, thus giving the operator a chance to place the work accurately upon the die, such as welding small pieces where much care is necessary in order to do a perfect ob; when the work is in proper position, pressure on the foot lever '4' releases the brake'11 and engages the clutch 2 which at once starts the shaft and the hammer 9 is in action, removal of pressure on the foot lever releases the clutch and at the same time applies the brake to flywheel through the aotion of spring 13. The spring actuated brake then insures against any movement of the hammer because of vibration.

The foregoing description in connection with the drawings will enable those familiar with the art to construct and use the mecha nism included in my invention.

1 claim 1. In a trip hammer having a frame, a shaft mounted within said frame, a clutch pulley and a flywheel mounted upon said shaft, a foot lever to operate said clutch, a bar pivoted to the frame at one end and carrying a brake-shoe at its opposite end said brake shoe being adapted to bear against the periphery of said fly-Wheel, a spring to force said brake-shoe against said flywheel and a connection between said barand said foot treadle to operate said brakeshoe simultaneously With said clutch, substantially as set forth.

2. In a trip hammer, a bar, pivoted to the main frame at one end, said bar carryin a brake shoe at its opposite end, said s oe being adapted to bear against the fly-Wheel of said trip hammer, a spring to force said brake shoe against said fly-wheel and means to actuate said brake shoe, simultaneously With the clutch of said trip hammer, substantially as set forth.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

HUGO ROEKER.

Witnesses:

CHAS. E. CURrIss, A. J. SToNEY. 

